Regulation control method of reconfigurable static reactive-power compensation/DC de-icing composite apparatus

A technology of static reactive power compensation and adjustment control, applied in reactive power compensation, reactive power adjustment/elimination/compensation, overhead installation, etc., can solve problems such as poor economy, and achieve the effect of fast and reliable tracking

Inactive Publication Date: 2009-02-18
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

Due to the small time and frequency of ice disasters, if the DC ice melting equi

Method used

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  • Regulation control method of reconfigurable static reactive-power compensation/DC de-icing composite apparatus
  • Regulation control method of reconfigurable static reactive-power compensation/DC de-icing composite apparatus
  • Regulation control method of reconfigurable static reactive-power compensation/DC de-icing composite apparatus

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Embodiment Construction

[0047] Such as figure 1 As shown, the valves VT2 and VT5 form an A reverse parallel valve, the valves VT3 and VT6 form a B reverse parallel valve, and the valves VT1 and VT4 form a C reverse parallel valve. The electrical connection of the whole group of valves is a thyristor controlled reactor (TCR) form , The thyristor-controlled reactor (TCR) is connected to the 35kV busbar of the substation, and the filter branch and the original reactor branch are connected to the 35kV busbar at the same time. The whole device works in static var compensation (SVC) working mode.

[0048] Control strategy in static var compensation (SVC) working mode: 1. Taking the stability of 500kV bus voltage and 35kV bus voltage in the substation as the steady-state regulation target; 2. Steady-state regulation makes full use of the original reactor branch in the substation for regulation , when the bus voltage is greater than the adjustment target voltage, the reactor branch will be put into the circ...

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Abstract

The invention relates to a method for regulating and controlling a reconfigurable static reactive compensation/DC ice-melting composite apparatus, wherein a complete set of controller completes the judgment of operation mode based on the difference of the primary equipment wire connection, and implements the whole switch of analog acquisition, triggering synchronization, tactical control and regulation, and the tactical regulation uses various regulation methods based on the operation mode. combined regulation control of the reconfigurable power electronic device with two different operation modes is implemented, and the complete set of regulation control policy method is completed on a same control hardware platform, which ensure the method be stabile and reliable as well as save hardware cost.

Description

technical field [0001] The invention relates to an adjustment and control method of a reconfigurable static var compensation (SVC) / DC deicing compound device. Background technique [0002] The icing disaster of transmission lines has caused great losses to the power system, the national economy and even the whole society. With the continuous development of power electronic technology, the application of power electronic rectification technology to DC icing solutions has a very wide development and application space. Due to the small time and frequency of ice disasters, if the DC ice melting equipment can only be used as an ice melting device, its economic efficiency is poor. In order to improve the utilization rate of the equipment and maintain the healthy level of the equipment, according to the actual needs, on the basis of the high-power thyristor converter technology, a reconfigurable DC deicing and static var compensation (SVC) can be developed. Power electronic device...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02G7/16
CPCY02E40/30
Inventor 崔大伟张帆徐桂芝王明鑫张皎
Owner STATE GRID CORP OF CHINA
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